1. Department of DermatologyAmsterdam UMCUniversity of Amsterdam Meibergdreef 9NL‐1105 AZ Amsterdam The Netherlands
2. Department of Physics and Medical TechnologyAmsterdam UMCVU University De Boelelaan 1117NL‐1081 HV Amsterdam The Netherlands
3. Department of DermatologyAmsterdam UMCVU University De Boelelaan 1117NL‐1081 HV Amsterdam The Netherlands
4. Department of Science and TechnologyUniversity of Twente NL‐7522 NB Enschede The Netherlands